// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using SixLabors.ImageSharp.PixelFormats;

namespace SixLabors.ImageSharp.Benchmarks.General.PixelConversion;

[StructLayout(LayoutKind.Sequential)]
public struct TestRgba : ITestPixel<TestRgba>
{
    public byte R;
    public byte G;
    public byte B;
    public byte A;

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public void FromRgba32(Rgba32 source)
    {
        this = Unsafe.As<Rgba32, TestRgba>(ref source);
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public void FromRgba32(ref Rgba32 source)
    {
        this = Unsafe.As<Rgba32, TestRgba>(ref source);
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public void FromBytes(byte r, byte g, byte b, byte a)
    {
        this.R = r;
        this.G = g;
        this.B = b;
        this.A = a;
    }

    public void FromVector4(Vector4 source)
    {
        throw new System.NotImplementedException();
    }

    public void FromVector4(ref Vector4 source)
    {
        throw new System.NotImplementedException();
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public Rgba32 ToRgba32()
    {
        return Unsafe.As<TestRgba, Rgba32>(ref this);
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public void CopyToRgba32(ref Rgba32 dest)
    {
        dest = Unsafe.As<TestRgba, Rgba32>(ref this);
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public Vector4 ToVector4()
    {
        return new Vector4(this.R, this.G, this.B, this.A) * new Vector4(1f / 255f);
    }

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    public void CopyToVector4(ref Vector4 dest)
    {
        var tmp = new Vector4(this.R, this.G, this.B, this.A);
        tmp *= new Vector4(1f / 255f);
        dest = tmp;
    }
}
